SNL at 40: Our 40 favorite moments from Saturday Night Live

Andrea Waguespack

"Saturday Night Live," which has never shied from self-congratulation with countless best-of, holiday and anniversary shindigs, is doing it again, big-time. "The SNL 40th Anniversary Special," three hours of it, will air live on Sunday night NBC, but before it does take a look at what makes this iconic show so great.

NBC/NBC via Getty Images

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Gilda Radner as Roseanne Roseannadanna during 'Weekend Update' on July 31, 1976

NBC/NBC via Getty Images

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Gilda Radner as Roseanne Roseannadanna during 'Weekend Update' on July 31, 1976